Robust full-field modal testing method for structural health monitoring of aerostructures under random noise

Belur, Muhammed Yavuz and Kefal, Adnan and Fassois, S. D. and Spiliotopoulos, P. (2024) Robust full-field modal testing method for structural health monitoring of aerostructures under random noise. In: 31st International Conference on Noise and Vibration Engineering, ISMA 2024 and 10th International Conference on Uncertainty in Structural Dynamics, USD 2024, Leuven

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Abstract

The robustness of a new modal testing method is investigated, based on the posterior treatment of the well-established inverse finite element method (iFEM) with Fourier transformation for mode identification and mode reconstruction of shell/plate structures. This post-treatment iFEM method, named iFEM mode reconstruction (iFEM-MoRe), is capable of both identification and reconstruction of modes for any structure when discrete sensor data is available. The computational framework of iFEM-MoRe is confirmed to be robust by comparing the natural frequencies of a rectangular plate, consisting of isotropic material, by performing several numerical analyses with different load and damage cases to address the well-known robustness issues. The method is found to be robust with these numerical studies. The pristine modal characteristics are estimated with an error smaller than 2.17%. Also, both damage identification and localization are robustly achieved.
Item Type: Papers in Conference Proceedings
Divisions: Faculty of Engineering and Natural Sciences
Depositing User: Adnan Kefal
Date Deposited: 28 Feb 2025 16:01
Last Modified: 28 Feb 2025 16:01
URI: https://research.sabanciuniv.edu/id/eprint/51191

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